MTU Setting

My Hub One and Home Hub 5 seem to have an MTU of 1488 which appears to be the reason I'm having the following error over the Playstation Network "The router in use may not support IP Fragments..." in turn giving me a connection error when trying to get online with certain games.

Would buying a replacement Modem/Router with the ability to set the MTU to 1492 likely fix this does anyone know ?

Re: MTU Setting

not all routers / modems give the option to set the MTU so don't worry about that, you can set it via the Playstation 3 / 4 which ever your using, go to settings then network and pick manual setup instead of Automatic keep everything on defaults when you get to the MTU change it to 1492, that should do the trick.

Re: MTU Setting

I should have mentioned I've tried manually changing the MTU to 1492 (and most other values) across PS3/PS4/PS Vita but unfortunately it doesn't get rid of the error message or the issues when trying to connect to certain games.

The important thing is to find the value that works for your router, and not be overly concerned about achieving 1492. For years I had routers that optimally worked with MTU or 1430 or 1458 with no detrimental effects.

First find the maximum MTU for your connection, and set and save that value in the router config.

Reboot the router, and test the connection with the new/lower MTU, and make sure it isn't fragmenting.

Reboot the PS4 and see whether the original error message persists.

If it does, then manually set the PS4 MTU to the same value that you just put in to the router.

DO NOT be tempted to put a higher MTU in the PS4 than what the router is set to.

Re: MTU Setting

Am I right in thinking that by doing the ping MTU fragment prompt, that 1488 is what my router is fixed at ?Because in work when I tried lowering the MTU setting on a different router the result would always add up to what I lowered it by, if I lowered it to 1492 for example instead of 1500 it would fragment at 1465 but not at 1464 and when I raised it to 1500 for example it would fragment at 1473 and not 1472

I can't edit/save the MTU of the Plusnet Hub One though so maybe a replacement is my only solution ?